﻿#pragma once
//计算矩形面积
double Calculate_rectangular_area(double length, double wid);
//计算矩形周长
double Calculate_the_rectangular(double length, double wid);
//计算正方形面积
double Calculate_the_square_area(double length);
//计算正方形周长
double Calculate_the_circumference_of_square(double length);